Add the ability to switch to a build in a pull request.
Add the ability to switch to a build in a pull request.

SUSE-Cloud/crowbar,mmnelemane/crowbar,dirkmueller/crowbar,toabctl/crowbar,rhafer/crowbar,aplanas/crowbar,rsalevsky/crowbar,rhafer/crowbar,tserong/crowbar,crowbar/crowbar,MaximilianMeister/crowbar,nkrinner/crowbar,aspiers/crowbar,rhafer/crowbar,dirkmueller/crowbar,toabctl/crowbar,tserong/crowbar,MaximilianMeister/crowbar,vwallfahrer/crowbar,aplanas/crowbar,SUSE-Cloud/crowbar,aspiers/crowbar,nkrinner/crowbar,mmnelemane/crowbar,crowbar/crowbar,vwallfahrer/crowbar,rsalevsky/crowbar